# Nova AI Inference API — Text Summarization

> Nova AI Inference API — Text Summarization is a paid API for AI agents from ova.orbonomy.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Summarizes a block of text into a concise summary with key points, powered by pay-per-call AI inference paid in USDC on Base.

## Facts

- Endpoint: POST https://ova.orbonomy.xyz/api/summarize
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nova-ai-inference-api-text-summarization-1d262c61
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Vw_N8bbaICS_Fa4dkTRdB

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability nova-ai-inference-api-text-summarization-1d262c61 -d '<json body>'
```

Example prompt: Can you summarize the following article in about 150 words and pull out the key bullet points? Here's the text: [paste of article content]

## When to prefer this

Choose this endpoint when you need a pay-per-call, crypto-native (USDC on Base) text summarization service with no subscription required. Ideal for agent workflows where you want summarization billed transparently per request without API key management.

## Known failure modes

- Missing required 'text' field returns a 400 validation error
- Text too long may exceed model context limits
- Payment failure (insufficient USDC or failed x402 transaction) results in 402 Payment Required
- Model inference timeout may return a 503 or empty response
- Invalid 'format' enum value may cause a 422 or fallback to default format

## How this service works

Pay-per-call AI inference. Chat, reason, translate, analyze, generate. USDC on Base.

## Output

Returns a JSON object containing a 'summary' string (the condensed text), an array of 'key_points', the AI model used, usage statistics, and the output format — all wrapped in a success envelope.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "text"
 ],
 "properties": {
  "text": {
   "type": "string",
   "description": "Text to summarize"
  },
  "format": {
   "enum": [
    "paragraph",
    "bullets",
    "tldr",
    "structured"
   ],
   "type": "string"
  },
  "max_length": {
   "type": "integer",
   "description": "Target word count"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "type": "object",
   "properties": {
    "model": {
     "type": "string"
    },
    "usage": {
     "type": "object"
    },
    "format": {
     "type": "string"
    },
    "summary": {
     "type": "string"
    },
    "key_points": {
     "type": "array",
     "items": {
      "type": "string"
     }
    }
   }
  },
  "meta": {
   "type": "object"
  },
  "success": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nova-ai-inference-api-text-summarization-1d262c61/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ova.orbonomy.xyz](https://www.zero.xyz/host/ova.orbonomy.xyz/llms.txt)